APA (7th ed.) Zitazioa
Smail, D. (2015). The origins of unhappiness: A new understanding of personal distress. Karnac.
Chicago Style (17th ed.) Zitazioa
Smail, David. The Origins of Unhappiness: A New Understanding of Personal Distress. London: Karnac, 2015.
MLA (9th ed.) Zitazioa
Smail, David. The Origins of Unhappiness: A New Understanding of Personal Distress. Karnac, 2015.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.